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Stress intensity factors
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ANGLE THETA DEGREES applied stress approximation assumed boundary element chapter COEFFICIENT compact tension specimen constant crack opening crack problems crack surfaces crack tip critical crack length curve edge crack END Sample run equation estimated failure fast fracture fatigue crack growth formulae fracture mechanics fracture toughness gives GOTO infinite sheet INPUT integration LAGRANGE INTERPOLATION linear elastic load material mixed-mode mode MODULUS NORMAL STRESS notch NUMBER OF CYCLES NUMBER OF INTERVALS NUMBER OF POINTS obtain opening displacement plane strain PLANE STRESS Y/N plastic zone plate predicted PRINT quarter-point elements R-values Ready Program notes region residual stresses run 1 RUN SECOND ORDER SX second order terms shear stress shown in figure solution statement strain energy density stress concentration stress intensity factor stresses and displacements tensile stress testing thickness TRESCA variable weight function width XI,YI yield stress Young's modulus zero